activateMenu = function(nav) {

    	/* THE FOLLOWING CODE IS A FIX FOR MIE */
	    /* currentStyle restricts the Javascript to IE only */
		if (document.all && document.getElementById(nav).currentStyle) {  
    	    var navroot = document.getElementById(nav).firstChild;
        
	        /* Get all the list items within the menu */
        	var lis=navroot.getElementsByTagName("LI");  
    	    for (i=0; i<lis.length; i++) {
        
	           /* If the LI has another menu level */
        	    if(lis[i].lastChild.tagName=="UL"){
            
    	            /* assign the function to the LI */
	             	lis[i].onmouseover=function() {	
                
                	   /* display the inner menu */
            	       this.lastChild.style.display="block";
        	        }
    	            lis[i].onmouseout=function() {                       
	                   this.lastChild.style.display="none";
                	}
            	}
        	}
    	}
	}
	
	window.onload = function(){
    	/* pass the function the id of the top level UL */
	    /* remove one, when only using one menu */
	    activateMenu('menu'); 
	}